Chapter 1.1, Problem 61E

System of Linear Equations. In Exercises 57-62, use a software program or a graphing utility to solve the system of linear equations.

$\begin{array}{rll}\frac{1}{2}{x}_1-\frac{3}{7}{x}_2+\frac{2}{9}{x}_3& =& \frac{349}{630}\\ \frac{2}{3}{x}_1+\frac{4}{9}{x}_2-\frac{2}{5}{x}_3& =& -\frac{19}{45}\\ \frac{4}{5}{x}_1-\frac{1}{8}{x}_2+\frac{4}{3}{x}_3& =& \frac{139}{150}\end{array}$